
#
# a = {1,2,3,4,5,6,7,}
#
# b = {8,5,6,98,644,2,3}
#
# #差集
# print(a & b)
# print(a.difference(b))
# print(b & a)
# print(b.difference(a))
#
# ##交集
# print(b & a)
# print(a.intersection(b))
# print(b.intersection(a))
#
#
# #并集
# print(a.union(b))
# print(b.union(a))
#
# #对称差集
# print(a.symmetric_difference(b))
# print(b.symmetric_difference(a))
#
#
# a = {1,2,3}
# b = {1,2,3,4,5,6}
# print(a.issubset(b))   #a是不是b的子集
# print(a.issuperset(b))  #a是不是b的父集

a = {1,2,3,4,5,6,7,4,3,5,6,2,8,9,10}

print(a)
